679975 has 12 divisors (see below), whose sum is σ = 859320. Its totient is φ = 533600.

The previous prime is 679969. The next prime is 679981. The reversal of 679975 is 579976.

It is an interprime number because it is at equal distance from previous prime (679969) and next prime (679981).

It is not a de Polignac number, because 679975 - 2⁹ = 679463 is a prime.

It is an Ulam number.

It is a plaindrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1245 + ... + 1705.

It is an arithmetic number, because the mean of its divisors is an integer number (71610).

2⁶⁷⁹⁹⁷⁵ is an apocalyptic number.

679975 is a deficient number, since it is larger than the sum of its proper divisors (179345).

679975 is a wasteful number, since it uses less digits than its factorization.

679975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 525 counting only the distinct ones).

The product of its digits is 119070, while the sum is 43.

The square root of 679975 is about 824.6059665076. The cubic root of 679975 is about 87.9355157756.

Subtracting from 679975 its reverse (579976), we obtain a palindrome (99999).

The spelling of 679975 in words is "six hundred seventy-nine thousand, nine hundred seventy-five".